Changing Log Output for a Servlet

ServletContext.log messages are sent to the server
log. By default, the System.out and System.err output
of servlets are sent to the server log. During startup, server log messages
are echoed to the System.err output. Also by default, there
is no Windows-only console for the System.err output.

You can change these defaults using the Administration Console Write to System
Log box. If this box is checked, System.out output is sent
to the server log. If it is unchecked, System.out output
is sent to the system default location only.